Welcome! And sorry that our wife's pain is so severe....and not getting sufficient help on top of all that...
Also, want to give you some congrats and respect that you are such an understanding partner to your girlfriend. It means the world to those in pain to have someone close that not only believes the pain is real, but willing to go above and beyond to help. I know it must be tough to see your lover writhe in pain and misery....but I'm sure you being there is helpful.
I really wish I could help you guys find a better doctor who would be not only understanding...but willing to actually help.
Sometimes patience is the key...I know that is a hard pill to swallow...but sometimes you have to build up trust with the doctor...
When I arrived at my Pain Management office...the doctor(really the Physician's assistant) cut my pain medication down by a quarter...and we tried different medications, injections, etc etc...
It took almost a year later to eventually move my medication not only up to where I was, but a smidgen beyond it.
So, maybe, just maybe all you two need to do is build up a trusting relationship with this doctor...it'll be hard...definitely was for me.
I'd be careful on visiting other doctor's if you find other's that deal with Chronic Pain...not to say you guys shouldn't...but don't visit too many.
And DEFINITELY do not accept other pain medication Rx from other doctors!!! I'm not suggesting she(or even you) abuse medication...but these are rough time for CPer...adding "doctor shopping/multi Rx use" on top of it will make it that much harder.
Not trying to scare ya, or judge ya. Just trying to help